Summary of Significant Accounting Policies (Details 1) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2017	Jan. 01, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings adjustment related to cumulative effect of new standard			$ 0.6
Excess tax deficiency related to vested awards, effect on the provision for income taxes	$ 2.7	$ 2.4

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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